{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SN74HCS139DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"SN74HCS139DR","canonicalUrl":"https://icboms.com/texas-instruments/SN74HCS139DR","factsUrl":"https://icboms.com/api/mcp/products/SN74HCS139DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments SN74HCS139DR, 74HCS series Decoder/Demultiplexer, 2 x 2:4 circuit, 16-SOIC surface mount, 2V to 6V single supply, -40°C to 125°C.","salesMarkdown":"## What this dual 2:4 decoder does on your board The Texas Instruments SN74HCS139DR is a dual 2-line to 4-line decoder/demultiplexer in the 74HCS logic family. It takes two address inputs per decoder and asserts one of four active-low outputs, with an active-low enable per section. Two independent decoders live in the same 16-SOIC package, so a single chip handles two separate address decode or demultiplexing tasks — memory bank select, I/O expansion, or routing a data stream to one of four destinations. ## Supply range and temperature grade — where it fits Operates on a single 2V to 6V supply. The -40°C to 125°C range suits industrial environments. ## Lifecycle and sourcing TI lists the SN74HCS139DR as Active and ROHS3 compliant. No last-time-buy or obsolescence notice is in effect, so it is safe to qualify into a new BOM.","metaTitle":"SN74HCS139DR Decoder/Demultiplexer, 2 x 2:4, 16-SOIC","metaDescription":"TI SN74HCS139DR dual 2-line to 4-line decoder/demultiplexer. 2V to 6V supply, -40°C to 125°C, 16-SOIC. Active, ROHS3.","metaKeywords":null},"attributes":{"series":"74HCS","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Decoder/Demultiplexer","Series":"74HCS","Circuit":"2 x 2:4","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2V ~ 6V","Independent Circuits":"2","Operating Temperature":"-40°C ~ 125°C","Voltage Supply Source":"Single Supply","Supplier Device Package":"16-SOIC","Current - Output High, Low":"7.8mA, 7.8mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.45","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.45000","currency":"USD"},{"qty":10,"price":"$0.36400","currency":"USD"},{"qty":25,"price":"$0.33280","currency":"USD"},{"qty":100,"price":"$0.24760","currency":"USD"},{"qty":250,"price":"$0.22440","currency":"USD"},{"qty":500,"price":"$0.18572","currency":"USD"},{"qty":1000,"price":"$0.13928","currency":"USD"},{"qty":2500,"price":"$0.12768","currency":"USD"},{"qty":5000,"price":"$0.11994","currency":"USD"},{"qty":12500,"price":"$0.11220","currency":"USD"},{"qty":25000,"price":"$0.10950","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5a844b197172d7ef24a264ceabc925eb.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between SN74HCS139DR and SN74HCS138?","answer":"The SN74HCS139DR contains two independent 2:4 decoders in one package, each with its own enable. The SN74HCS138 is a single 3:8 decoder with three enable inputs. Choose the 139 when you need two separate decode blocks; pick the 138 for a single wider address decode."},{"question":"Is SN74HCS139DR compatible with 5V logic?","answer":"Yes. The supply range of 2V to 6V covers 5V operation directly. Input thresholds are compatible with standard 5V CMOS and TTL logic levels when VCC is 5V."},{"question":"What is SN74HCS139DR used for?","answer":"It is a dual 2-line to 4-line decoder/demultiplexer used for memory address decoding, I/O port expansion, data routing to one of four outputs, and general-purpose combinational logic where two independent decode functions are needed in a single 16-SOIC package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/SN74HCS139DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/SN74HCS139DR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}